CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Revenues
Total Revenues	$ 44,941,246	$ 43,657,888	$ 38,650,570
Direct Cost of Revenues
Total Direct Cost of Revenues	(7,104,667)	(8,761,463)	(8,338,305)
General and Administrative Expenses	(9,818,075)	(9,785,370)	(10,252,610)
Depreciation and Amortization	(15,797,278)	(15,761,523)	(12,314,700)
Total Operating Expenses	(32,720,020)	(34,308,356)	(30,905,615)
Gain on Disposition of Assets	21,977,465	22,035,666	38
Total Operating Income	34,198,691	31,385,198	7,744,993
Investment Income	344,843	52,221	37,985
Interest Expense	(12,466,062)	(10,423,286)	(8,523,136)
Income (Loss) from Continuing Operations Before Income Tax Expense	22,077,472	21,014,133	(740,158)
Income Tax Benefit (Expense) from Continuing Operations	(5,472,178)	(6,025,148)	22,481,523
Net Income from Continuing Operations	16,605,294	14,988,985	21,741,365
Income from Discontinued Operations (Net of Income Tax)—See Note 23	98,367,564	22,178,805	19,978,059
Net Income	$ 114,972,858	$ 37,167,790	$ 41,719,424
Basic
Net Income from Continuing Operations (in dollars per share)	$ 3.32	$ 2.72	$ 3.92
Net Income from Discontinued Operations (Net of Income Tax) (in dollars per share)	19.71	4.04	3.61
Basic Net Income per Share (in dollars per share)	23.03	6.76	7.53
Diluted
Net Income from Continuing Operations (in dollars per share)	3.32	2.71	3.90
Net Income from Discontinued Operations (Net of Income Tax) -Diluted (in dollars per share)	19.68	4.01	3.58
Diluted Net Income per Share (in dollars per share)	23.00	6.72	7.48
Dividends Declared and Paid (in dollars per share)	$ 0.44	$ 0.27	$ 0.18
Income Properties
Revenues
Total Revenues	$ 41,955,414	$ 40,075,731	$ 31,406,930
Direct Cost of Revenues
Total Direct Cost of Revenues	(7,000,001)	(8,170,083)	(6,917,743)
Depreciation and Amortization	(15,774,228)	(15,728,095)	(12,272,265)
Management Services
Revenues
Total Revenues	304,553
Commercial Loan Investments
Revenues
Total Revenues	1,829,015	615,728	2,052,689
Real Estate Operations
Revenues
Total Revenues	852,264	2,966,429	5,190,951
Direct Cost of Revenues
Total Direct Cost of Revenues	$ (104,666)	$ (591,380)	$ (1,420,562)